17 February 1995 Quadtree-based block merging algorithm for subband coding
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An efficient video coding algorithm is described. It is based on a new quadtree block merging algorithm and wavelet decomposition of video signals using orthonormal and biorthogonal filter banks. The merging algorithm represents the motion compensated predicted images in a small set of rectangular regions in order to improve the coding efficiency and to minimize the border affects associated to the wavelet transform. Results of coding simulations using 8 X 8 and 16 X 16 blocks are presented. Also, subjects such as choice of the optimal filter bank, boundary effects, quantization of the wavelet coefficients, and filtering the prediction error by wavelet decomposition are discussed.
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Vitor Mendes Silva, Luis A. S. V. de Sa, "Quadtree-based block merging algorithm for subband coding", Proc. SPIE 2451, Advanced Image and Video Communications and Storage Technologies, (17 February 1995); doi: 10.1117/12.201194; https://doi.org/10.1117/12.201194


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